Please use this identifier to cite or link to this item: http://hdl.handle.net/1/863
Title: X-Ray Fluorescence Analysis of Ground Coffee
Authors: HERNÁNDEZ, MARÍA CRISTINA
ROMERO, DARÍO
Torres, Humberto
MIRANDA, JAVIER
LÓPEZ, A. ENRIQUE HERNÁNDEZ
Keywords: Ground coffee
Elemental analysis
XRF
Food analysis
Issue Date: 7-Aug-2017
Publisher: Chitkara University Publications
Abstract: Coffee is becoming one of the most popular beverages in Mexico. In the present work, X-ray Fluorescence (XRF) was used to determine the contents of several elements (with atomic numbers between 11 and 38) in 11 samples of commercial ground coffee, comparing with another one of soluble coffee and two of used ground coffee. Samples were dried at room temperature and pelletized. XRF analyses were carried out using a spectrometer based on an Rh X-ray tube, registering the characteristic x-rays with a Silicon Drift Detector. The system detection calibration and accuracy check was performed through the analysis of NIST certified reference materials 1547 (peach leaves), 1570a (spinach leaves), 1573a (tomato leaves), and 1571 (orchid leaves). As a general rule, the elemental concentrations measured are similar in all samples of coffee, in values not exceeding toxic levels. However, the differences among the elemental concentrations are shown.
URI: http://dspace.chitkara.edu.in/xmlui/handle/1/863
http://hdl.handle.net/1/863
ISSN: Print 2321-8649
Online 2321-9289
Appears in Collections:JNP Volume 5 Number 1 (August - 2017)

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